Solar flares on December 1, 2025
The most powerful solar flare in 24 hours
C7.9 (normal) flare - December 1 at 1:20 AM
Solar activity index
Value as of the end of the day on December 1, 2025
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from November 30, 2025 to December 1, 2025
Time zone — UTC-05 (Washington)
List of solar flares for December 1, 2025
The total number of solar flares of class C and higher — 7 flares
C class — 7 | M class — 0 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| C3.2 | 14:12 | 14:19 | 14:21 | — |
| C3.2 | 13:51 | 14:01 | 14:12 | 4294 |
| C4.1 | 11:22 | 11:37 | 11:51 | 4294 |
| C3.5 | 09:16 | 09:23 | 09:28 | 4294 |
| C4.2 | 07:46 | 07:49 | 07:51 | 4296 |
| C6.0 | 04:54 | 05:14 | 05:56 | 4294 |
| C7.9 | 01:16 | 01:20 | 01:22 | 4296 |